Specifications

Reference Guide
A-13
A.4 System Power Supplies and Converters
The following is a list of standards for the integrated access system power supplies, converters
and ring generators.
Model 8901 AC Power Supply 120/240 VAC, CE Marked
Input Voltage Self detecting
90VAC to 135VAC at 60 Hz
175VAC to 264VAC at 50 Hz
Input Frequency 47 to 63 Hz
Inrush Surge Current maximum 12 amp peak at 264 VAC cold start
Output Power 55 W Continuous
Max. No. per System 2
Redundancy Optional
Ventilation Convection Cooled
Protection Unit is fused and protect from short circuits and over-voltage
Approvals EN 60950/A2, EN 50 081-1, EN 50 082-1, UL 1459, UL 1950, CSA-C22.2 No. 950
Model 8902 DC Power Supply -48 VDC, CE Marked
Input Voltage -42 to -60 VDC
Inrush Surge Current maximum 12 amp at 60VDC
Output Power 55 W Continuous
Max. No. per System 2
Redundancy Optional
Ventilation Convection cooled
Protection Unit is fused protected from short circuits and over-voltage
Unit is diode protected from reversed polarity
Approvals EN 60950/A2, EN 50 081-1, EN 50 082-1, UL 1459, UL 1950, CSA-C22.2 No. 950
Model 8903 Power Converter 120 VAC to -48 VDC
Input Voltage 90 VAC to 132 VAC
Input Frequency 60 Hz
Inrush Surge Current maximum 20 amp peak at 132 VAC cold start
Output Power 100 W Continuous
Output Voltage -48.0 VDC
Output Current 2 amp
Max. No. per System 2
Redundancy Optional
Ventilation Convection cooled
Approvals UL 1459, UL 1950, CSA-C22.2 No. 950
Model 8904 Internal Ringing Generator (Discontinued)
Input Voltage 44 to 56 VDC
Output Power 10 W
Output Voltage 105 VDC rms default - adjustable from 60 to 105 Vrms
Output Current 100 mA rms
Output Frequency 20 Hz
Max. No. per System 5, 1 Master, up to 4 Slave
Redundancy There is no provision for Master Ringer redundancy, however the slave units back each
other up.
Ventilation Convection cooled
Approvals En 60950/A2, EN 50 081-1, EN 50 082-1, UL 1459, UL 1950, CSA-C22.2 No. 950